Abu Dawud Book 2, Hadith Number 1435.

Chapter : On reciting the supplication in prayer.

Narated By Abu Hurairah : By Allah, I shall offer prayer like that of the Apostle of Allah (PBUH). The narrator said: Abu Hurairah used to recite the supplication in the last rak’ah of the noon, night and dawn prayers. He would supplicate Allah for the believers and curse the unbelievers.